<header ui-dragdrop:desktop>
    <div class="win-btns">
        <button class="min" ui-on:click.stop="$minView">最小化</button>
        <button class="close" ui-on:click.stop="$closeView">关闭</button>
    </div>
    <h2>
        Excel 表格
    </h2>
</header>
<div class="content" ref="excel">
</div>